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Table 5 Barriers questionnaire factor analysis and internal reliability

From: Development and psychometric properties of a questionnaire to assess barriers to feeding critically ill patients

Item number Questionnaire items and new subscale names Eigenvalue Variance explained Loading on Factor 1 Loading on Factor 2 Loading on Factor 3 Loading on Factor 4 Loading on Factor 5 Alpha Alpha if item deleted
  Subscale 1: Guideline Recommendations and Implementation Strategies 10.01 47.67       0.89  
C6 Current scientific evidence supporting some nutrition interventions is inadequate to inform practice.    0.68 0.15 0.30 0.24 0.23   0.87
C7 The current guidelines for nutrition are not readily accessible when I want to refer to them.    0.84 0.19 0.07 0.17 0.20   0.86
C8 The language of the recommendations of the current guidelines for nutrition are not easy to understand.    0.77 0.25 0.12 0.12 0.31   0.85
C10 No feeding protocol in place to guide the initiation and progression of enteral nutrition.    0.54 0.38 0.15 0.34 0.31   0.87
C11 Current feeding protocol is outdated.    0.63 0.31 0.21 0.31 0.14   0.86
  Subscale 2: Delivery of Enteral Nutrition to the Patient 1.68 8.00       0.86  
C12 Delay in physicians ordering the initiation of EN.    0.19 0.42 0.41 0.45 0.17   0.85
C18 No feeding tube in place to start feeding.    0.26 0.82 0.12 0.12 0.27   0.81
C19 Delays in initiating motility agents in patients not tolerating enteral nutrition (i.e., high gastric residual volumes).    0.19 0.78 0.32 0.07 0.24   0.81
C20 Delays and difficulties in obtaining small bowel access in patients not tolerating enteral nutrition (i.e., high gastric residual volumes).    0.16 0.72 0.27 0.27 −0.02   0.84
C21 In resuscitated, hemodynamically stable patients, other aspects of patient care still take priority over nutrition.    0.32 0.52 0.17 0.23 0.17   0.85
  Subscale 3: Critical Care Provider Attitudes and Behavior 1.20 5.72       0.87  
C14 Non-ICU physicians (i.e., surgeons, gastroenterologists) requesting patients not be fed enterally.    −0.24 0.27 0.67 0.31 0.04   0.83
C15 Nurses failing to progress feeds as per the feeding protocol.    0.09 0.26 0.82 0.09 0.19   0.79
C16 Fear of adverse events due to aggressively feeding patients.    0.33 0.24 0.60 0.07 0.33   0.84
C17 Feeding being held too far in advance of procedures or operating room visits.    0.10 0.11 0.87 0.15 0.07   0.81
  Subscale 4: Dietitian Support 1.13 5.36       0.84  
C13 Waiting for the dietitian to assess the patient.    0.37 0.26 0.19 0.63 0.18   0.79
C2 Not enough dietitian time dedicated to the ICU during regular weekday hours.    0.03 0.26 0.09 0.70 0.49   0.80
C3 No or not enough dietitian coverage during evenings, weekends and holidays.    0.27 0.13 0.15 0.77 0.19   0.77
C9 There is not enough time dedicated to education and training on how to optimally feed patients.    0.51 0.08 0.29 0.60 −0.05   0.83
  Subscale 5: ICU Resources 1.10 5.23       0.84  
C1 Not enough nursing staff to deliver adequate nutrition.    0.15 0.25 0.22 0.38 0.66   0.84
C4 Enteral formula not available on the unit.    0.31 0.23 0.07 0.24 0.74   0.71
C5 No or not enough feeding pumps on the unit.    0.32 0.08 0.21 0.04 0.80   0.75
  Eliminated/Reworded Item          
C22 Lack of agreement among ICU team on the best nutrition plan of care for the patient.    0.23 0.46 0.25 0.42 0.35   
  1. Bolded text = items retained in the factor.